indonesia put an export tax on the ores earlier this year. they failed to narrow their differences but agreed to continue talks over the issue. >>> some children wake up and cringe at the thought of heading into the schoolyard. they know that bullies are waiting for them. we have two reports on how schools in two countries australia and the u.s. are tackling the problem. first nhk world reports from sydney. >> reporter: this high school in south australia has set up a program to get students to confront the issue of bullying. and look at the way to tackle it. >> what kind of characteristics might a person have that leads them to get bullied a lot? a reason? >> sexuality. >> reporter: professor ken rigby is one of the leading thourts on bullying. he's been asked to lead a class addressing the issue. he gets the students to give their opinions on why bullying happens and how they can stop it. >> what might he do? what might he say? stop. yes. what else? you look for a teacher. yeah. >> reporter: professor rigby says bystanders play a key role i